Since the source and the observer both move with the same speed there is no relative motion. Thus there is no Doppler's effect and no change in apparent frequency. Hence the option (d).
Solution:
Let the speed of the train by x km/hr
And the time taken by the train be ‘y’ hrs
Distance traveled by the train is x.y = xy
Case I
If the train would...
(a) 35000 N (b) 1.944 m/s2 (c) 15552 N
(a) Force exerted by the engine, F = 40000 N
Frictional force offered by the track, Ff = 5000 N
Net accelerating force, Fa...
The correct answer is (a) F1 > F2.
Explanation:
The earth spins from west to east at equator. To maintain the same speed the first train has to press the track more than normal as...
The correct answer is (a) 506 Hz
EXPLANATION:
The frequency of beats ν = |ν₁-ν₂| = 6 Hz where ν₁ = 512 Hz, ν₂ = frequency of sonometer. Thus ν₂ is either...
The correct answer is (a) F1 > F2.
Explanation:
The earth spins from west to east at equator. To maintain the same speed the first train has to press the track more than normal...
(c) Statement 1 and 3 contradict each-other, hence both statements cannot be true together. But there are a situation where in both statements are false that is if some of...
1 Answers
1 views
Log in to ask questions, provide answers, or leave comments.